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Finding the Fourth Proportional to 123,093.66, 170,582.75 and 120,731.34

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Solution

The fourth proportional to 123,093.66, 170,582.75 and 120,731.34 is: 167,309.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,093.66 : 170,582.75 = 120,731.34 : x
  2. Step 2: Convert to fraction form
    123,093.66/170,582.75 = 120,731.34/x
  3. Step 3: Cross multiply
    123,093.66x = 170,582.75 × 120,731.34
  4. Step 4: Simplify right side
    123,093.66x = 20,594,683,384.73
  5. Step 5: Solve for x
    x = 20,594,683,384.73/123,093.66
  6. Step 6: Final answer
    x = 167,309.05

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.